package com.lyl.config.resource;

import org.springframework.context.annotation.Bean;
import org.springframework.core.io.ClassPathResource;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.oauth2.config.annotation.web.configuration.EnableResourceServer;
import org.springframework.security.oauth2.config.annotation.web.configuration.ResourceServerConfigurerAdapter;
import org.springframework.security.oauth2.config.annotation.web.configurers.ResourceServerSecurityConfigurer;
import org.springframework.security.oauth2.provider.token.TokenStore;
import org.springframework.security.oauth2.provider.token.store.JwtAccessTokenConverter;
import org.springframework.security.oauth2.provider.token.store.JwtTokenStore;
import org.springframework.util.FileCopyUtils;

import java.io.IOException;

/**
 * @author lylbell
 * @date 2021-06-21 14:41
 */
@EnableResourceServer
@EnableGlobalMethodSecurity(prePostEnabled = true)
public class ResourceServerConfig extends ResourceServerConfigurerAdapter {

    @Override
    public void configure(HttpSecurity http) throws Exception {
        http.csrf().disable()
                .sessionManagement().disable()
                .authorizeRequests().antMatchers(
                        "/gt/register",
                "/login",
                "/v2/api-docs",
                "/swagger-resources/configuration/ui",//用来获取支持的动作
                "/swagger-resources",//用来获取api-docs的URI
                "/swagger-resources/configuration/security",//安全选项
                "/webjars/**",
                "/swagger-ui.html"
        ).permitAll().antMatchers("/**").authenticated()
                .and().headers().cacheControl();
    }

    @Override
    public void configure(ResourceServerSecurityConfigurer resources) throws Exception {
        resources.tokenStore(jwtTokenStore());
    }

    private TokenStore jwtTokenStore() {
        JwtTokenStore jwtTokenStore = new JwtTokenStore(jwtAccessTokenConverter());
        return jwtTokenStore;
    }

    @Bean
    public JwtAccessTokenConverter jwtAccessTokenConverter() {
        //资源服务器 公钥认证  ，  授权服务器：私钥生成一个token
        JwtAccessTokenConverter tokenConverter = new JwtAccessTokenConverter();
        //获取公钥
        ClassPathResource classPathResource = new ClassPathResource("coinexchange.txt");
        String publicKey = null;
        try {
            byte[] bytes = FileCopyUtils.copyToByteArray(classPathResource.getInputStream());
            publicKey = new String(bytes,"UTF-8");
        } catch (IOException e) {
            e.printStackTrace();
        }
        tokenConverter.setVerifierKey(publicKey);
        return tokenConverter;
    }
}
